Given that Microsoft had excellent reason to ask for an extra 2 days, I guess the real question is that for a data-driven organization, why Google think 90 days

Given that Microsoft had excellent reason to ask for an extra 2 days, I guess the real question is that for a data-driven organization, why Google think 90 days is such a good number in the first place, and why they insisted on sticking to it despite the asinine alternative (forcing tens of thousands of IT departments to coordinate an out of band change for a low severity bug).